WAI Technical Papers

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Introduces the November 2005 W3C Working Group Note Inaccessibility of CAPTCHA , which examines potential
solutions to test that users are human, not software robots, in a way that is accessible to
people with disabilities.

Links to 1999-2002 documents on accessibility and XML, CSS, SMIL, SVG, and HTML 4. More current information is available from the list of Techniques for WCAG 2.0, including
HTML, XHTML, CSS, and scripting techniques.